CVE-2025-41660
Low-priv remote attacker can replace boot app in CODESYS Control runtime, enabling code execution.
Is CVE-2025-41660 being exploited?
Not confirmed. CVE-2025-41660 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2025-41660?
CVE-2025-41660 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-41660?
Yes. A fix has been recorded for CVE-2025-41660. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-41660 affect?
CVE-2025-41660 affects CODESYS Control runtime system. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-41660?
Monitor for updates; apply patch when released; restrict boot/firmware access
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on ICS devices via boot replacement; attacker could run arbitrary code.
Patch when possible
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 4.21.0.0
- affected< 3.5.22.0
- affected< 3.5.22.0
- affected< 3.5.22.0
- affected< 3.5.22.0
- affected< 3.5.22.0
- affected< 4.21.0.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.